#include <stdio.h>
#define SIZE 10
int sum(int [ ], int);
int main(void)
{
    int marbles[SIZE] = {20, 10, 5, 39, 4, 16, 19, 26, 31, 20};
    long answer;
    answer = sum(marbles, SIZE);
    printf("The total number of marbles is %d.\n", answer);
    printf("The size of marbles %zd bytes.\n", sizeof marbles);
    return 0;
}

int sum(int ar[ ], int n)
{
    int i;
    int total = 0;
    for(i = 0; i < n; i++)
        total += ar[i];
    printf("The size of ar is %zd bytes.\n", sizeof ar);
    return total;
}
